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Consolidated Statements of Changes in Equity - CAD ($) $ in Millions | Total | Common shares | Preferred shares | Issued capital Common shares | Issued capital Preferred shares | Contributed surplus | Deficit | Deficit Common shares | Deficit Preferred shares | Accumulated other comprehensive income | [1] | Attributable to shareholders | Attributable to shareholders Common shares | Attributable to shareholders Preferred shares | Attributable to non-controlling interests
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Changes in equity [abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Adjustments on implementation of IFRS 16 | $ 3 |  |  |  |  |  | $ 3 |  |  |  | $ 3 |  |  |
Adjusted beginning balance | 4,137 |  |  | $ 3,059 | $ 942 | $ 11 | (1,493) |  |  | $ 481 | 3,000 |  |  | $ 1,137
Balance, beginning of year at Dec. 31, 2018 | 4,134 |  |  | 3,059 | 942 | 11 | (1,496) |  |  | 481 | 2,997 |  |  | 1,137
Changes in equity [abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net earnings (loss) | 176 |  |  |  |  |  | 82 |  |  |  | 82 |  |  | 94
Other comprehensive income (loss) |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net losses on translating net assets of foreign operations, net of hedges and of tax | (38) |  |  |  |  |  |  |  |  | (38) | (38) |  |  |
Net gains on derivatives designated as cash flow hedges, net of tax | 19 |  |  |  |  |  |  |  |  | 19 | 19 |  |  |
Net actuarial losses on defined benefits plans, net of tax | (26) |  |  |  |  |  |  |  |  | (26) | (26) |  |  |
Intercompany FVOCI investments | 0 |  |  |  |  |  |  |  |  | 17 | 17 |  |  | (17)
Total comprehensive income (loss) | 131 |  |  |  |  |  | 82 |  |  | (28) | 54 |  |  | 77
Dividends | (30) | $ (34) | $ (30) |  |  |  |  | $ (34) | $ (30) |  |  | $ (34) | $ (30) |
Changes in non-controlling interests in TransAlta Renewables (Note 4(V) and 13) | 28 |  |  |  |  |  | 5 |  |  | 1 | 6 |  |  | 22
Shares purchased under NCIB | (68) |  |  | (83) |  |  | 15 |  |  |  | (68) |  |  |
Effect of share-based payment plans (Note 30) | 33 |  |  | 2 |  | 31 |  |  |  |  | 33 |  |  |
Distributions paid, and payable, to non-controlling interests | (135) |  |  |  |  |  |  |  |  |  |  |  |  | (135)
Balance, end of year at Dec. 31, 2019 | 4,062 |  |  | 2,978 | 942 | 42 | (1,455) |  |  | 454 | 2,961 |  |  | 1,101
Changes in equity [abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net earnings (loss) | (253) |  |  |  |  |  | (287) |  |  |  | (287) |  |  | 34
Other comprehensive income (loss) |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net gains on derivatives designated as cash flow hedges, net of tax | (91) |  |  |  |  |  |  |  |  | (91) | (91) |  |  |
Net actuarial losses on defined benefits plans, net of tax | (11) |  |  |  |  |  |  |  |  | (11) | (11) |  |  |
Intercompany FVOCI investments | 0 |  |  |  |  |  |  |  |  |  | (50) |  |  | 50
Total comprehensive income (loss) | (355) |  |  |  |  |  | (287) |  |  | (152) | (439) |  |  | 84
Dividends | (49) | $ (58) | $ (49) |  |  |  |  | $ (58) | $ (49) |  |  | $ (58) | $ (49) |
Changes in non-controlling interests in TransAlta Renewables (Note 4(V) and 13) | 20 |  |  |  |  |  | 5 |  |  |  | 5 |  |  | 15
Shares purchased under NCIB | (61) |  |  | (79) |  |  | 18 |  |  |  | (61) |  |  |
Effect of share-based payment plans (Note 30) | (7) |  |  | (3) |  | (4) |  |  |  |  | (7) |  |  |
Distributions paid, and payable, to non-controlling interests | (116) |  |  |  |  |  |  |  |  |  |  |  |  | (116)
Balance, end of year at Dec. 31, 2020 | $ 3,436 |  |  | $ 2,896 | $ 942 | $ 38 | $ (1,826) |  |  | $ 302 | $ 2,352 |  |  | $ 1,084
[1] | Refer to Note 29 for details on components of, and changes in, accumulated other comprehensive income (loss).

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